FEEDBACK AND CONTROL SYSTEMS

In an open loop control system the output ________

• is independent of control input

• is dependent on control input

• only system parameters have effect on the control output

• none of the above

A control system in which the control action is somehow dependent on the output is known as ______

• Open loop system

• Semiclosed loop system

• Closed loop system

• None of the the above

In open loop system the control action ________

• depends on the size of the system

• depends on system variables

• depends on the input signal

• is independent of the output

An automatic toaster is a ______ loop control system.

• Open

• Closed

• Partially closed

• all of the above

A closed loop system is distinguished from open loop system by which of the following?

• Servomotor

• Feedback

• Output pattern

• Input pattern

Which among the following is not an advantage of an open loop system?

• Simplicity in construction and design

• Easy maintenance

• Rare problems of stability

• Requirement of systems calibration from time to time

In a time shifting property, a negative t_o means _______

• Factor in which a right shifting is being performed

• Factor in which a left shifting is being performed

• Factor in which a middle shifting is being performed

• Factor in which no shifting is being performed

Linearity property is a combination of _________ principles.

• Homogeneity and Thevenin's

• Thevenin's and Superposition

• Superposition and Homogenity

• Laplace and Fourier

This principle states that if we multiply a constant in the time domain, the same constant will be multiplied in the laplace domain.

• Thevenin's principle

• Superposition principle

• Linearity Principle

• Homogeneity Principle

In a closed loop system, _______________.

• the error with respect to the desired input is being determined

• the error with respect to the desired output is not determined

• the error with respect to the desired input is not determined

• the error with respect to the desired output is being determined